I'm sure most of you are familiar with Flange:



I'm wondering what solenoid he's using to hold back full pressure co2.
In this thread he mentions (not sure if jokingly) that it's a gravy valve.
http://www.fightingrobots.co.uk/thre...ight=pneumatic

Any idea what specific valve it is and where I can pick one up? Or a similar lightweight full pressure valve.